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仿形彈性鎮(zhèn)壓輥減粘防滑結構設計與試驗
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“十二五”國家科技支撐計劃資助項目(2014BAD06B03)和國家自然科學基金資助項目(51305158)


Design and Experiment on Reducing Soil Adhesion and Anti-slip Structure of Profiling Elastic Press Roller
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    摘要:

    針對仿形彈性鎮(zhèn)壓輥粘附土壤和滑移率較大的問題,,基于典型土壤動物蚯蚓的體表柔性幾何特征,設計了一種適用于仿形彈性鎮(zhèn)壓輥的減粘防滑結構,,其主體是橡膠凸起,,同時采用肋條結構對其進行固定,。這種結構具有粘附土壤少,、滑移率低,、鎮(zhèn)壓力分布均勻,、碎土效果好等優(yōu)點。通過理論計算和運動學分析對減粘防滑結構的運動過程進行研究,,得出橡膠凸起的特征方程,,以及凸起高度和肋條高度的取值范圍。通過三因素三水平正交組合試驗得出影響鎮(zhèn)壓輥粘附土壤量因素的顯著性順序依次為:凸起高度,、肋條高度,、載荷;影響鎮(zhèn)壓輥滑移率因素的顯著性順序依次為:肋條高度,、凸起高度,、載荷;得到減粘防滑結構的最佳參數(shù)組合為:載荷450.0N,、凸起高度13.9mm,、肋條高度15.1mm,并找到各因素對粘附土壤質量和滑移率的影響,。田間驗證試驗和對比試驗得到鎮(zhèn)壓輥的粘附土壤質量為39.2g,,滑移率為3.89%,分別比沒有減粘防滑結構的鎮(zhèn)壓輥降低60.1%和54.3%,。

    Abstract:

    During the working process of press roller, the deficiencies in the soil adhesion and the large slip rate on the profiling elastic press roller are existed. Based on the flexible geometry features of the typical soil animal body surface, the reducing soil adhesion and anti-slip structure were designed to solve the problem. The structure consists of rubber bulges, which are fixed by the existing bionic rib structure. This structure has the advantages of less soil adhesion, lower slip rate, more uniform pressure distribution and better soil crushing effect. The movement process of the reducing soil adhesion and anti-slip structure was researched by using theoretical calculation and kinematics analysis, the characteristic equation of rubber bulges and the value ranges of bulge height and rib height were obtained. The orthogonal combination experiments of three factors and three levels were designed and performed. The results showed that the primacy sequence of the experiment factors influencing soil adhesion was: rubber bulge height (H), rib height (L), total loads (F) and the primacy sequence of the experiment factors influencing slip rate was: rib height, rubber bulge height and total loads. Optimal levels of the experiment factors influencing soil adhesion and slip rate were F of 450.0N, H of 13.9mm, L of 15.1mm. At the same time, verification tests and comparison tests were conducted in the field. The results showed the soil adhesion quality was 39.2g, the slip rate was 3.89%, compared with the roller without the reducing soil adhesion and anti-slip structure, the soil adhesion quality was reduced by 60.1% and the slip rate was reduced by 54.3%.

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賈洪雷,王文君,莊健,羅曉峰,姚鵬飛,李楊.仿形彈性鎮(zhèn)壓輥減粘防滑結構設計與試驗[J].農業(yè)機械學報,2015,46(6):20-27. Jia Honglei, Wang Wenjun, Zhuang Jian, Luo Xiaofeng, Yao Pengfei, Li Yang. Design and Experiment on Reducing Soil Adhesion and Anti-slip Structure of Profiling Elastic Press Roller[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(6):20-27.

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  • 收稿日期:2015-01-26
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  • 在線發(fā)布日期: 2015-06-10
  • 出版日期: 2015-06-10
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